He told The Guardian: "That's an interesting rumour. I don't know if I can confirm or deny that, but what I will say is that I did hang out with One Direction in London.

"It sounds completely generic to say, but I'm always impressed or extremely happy when I end up in the same room with a band who are at the stage of nuclear explosion in their career and they're so normal it almost turns you off.

"Like, 'How are you not more messed up right now? I'm looking for syringes, where are they?'"

Confirming the rumour, he added: "Yes, we did do something is the truth. I can't say what it's for, though."

When asked if he thinks Styles could leave One Direction, he said: "Oh my God, I have no idea. I've never had any conversations with him or any of them regarding that."